If you plan to port a desktop application to a tablet, it’s reasonable to consider designing a simplified version, in landscape mode, as a starting point—stripping away menus and possibly providing palette-style, touch interfaces in their place. For portrait mode, you’ll need to make some decisions about what to show. You must also decide which orientation should be the primary one. In portrait mode, you may need to turn secondary or navigation panes into pop-up menus. Plus, to make the best use of the screen real estate in each different orientation, you may need to reorient other types of panes or palettes from side-by-side to above-and-below or vice versa. Some sets of related panes may work well as flip-over panels that reveal additional controls or content on their back side.